Extant accounts often provide context that enables a determination of whether the round was likely from artillery or infantry fire, or the composite unit casualties will suggest the source. My compiled list of Gettysburg casualties actually has relatively few mentions of a "round ball," or even "buckshot" for that matter. The vast majority of gunshot wounds were attributed to conoidal (minie) ball, when details are provided.
However, Noonanda, you do have a point. One example involves a soldier in Pickett's division, Private David C. Trainham of the 56th Virginia, who was wounded by a round ball, which is described as having been inflicted by either canister or "buck and ball."
Other examples:
- Thaddeus Pagand, 12th Virginia, 3 July, wounded by ball from spherical case shot in cheek during the cannonade.
- Byrd McCormick, Taylor’s Battery, 2 July, shot through calf of leg by bullet from a spherical case shot.
- Edward F. Chapin, 15th Massachusetts, 2 July, struck by a ball right knee, then second ball in right knee exiting same spot, then spherical case shot in left thigh, died 1 August.